//
//  UIBarButtonItem+Extension.swift
//  SinaWeibo
//
//  Created by apple on 15/11/19.
//  Copyright © 2015年 apple. All rights reserved.
//

import UIKit

extension UIBarButtonItem{
    
    
    //抽取便利的构造函数
    convenience init(imageName:String,target:AnyObject?,actionName:String?) {
        
        let btn = UIButton(type: .Custom)
        
        btn.setImage(UIImage(named: imageName), forState:.Normal)
        btn.setImage(UIImage(named: imageName + "_highlighted"), forState: .Highlighted)
        
//        if let action = actionName , targetObj = target {
//            
//            
//            btn.addTarget(targetObj, action: Selector(action), forControlEvents: UIControlEvents.TouchUpInside)
//        }
        if let action = actionName, targetObj = target {
            
            btn.addTarget(targetObj, action: Selector(action), forControlEvents: .TouchUpInside)
        }

        btn.sizeToFit()

        self.init(customView:btn)
    }
}